A tension detection mechanism for abrasive belt processing

Abstract

The application discloses a tension detection mechanism for grinding abrasive belt processing and belongs to the technical field of grinding abrasive belt detection, which comprises a base, bolted on the upper surface of the base on both sides are workbenches, and the upper surface of the left workbench is bolted with a motor, and the inner wall of the right workbench is fixedly connected with a limiting rod; a workboard is slidably arranged in the workbench, and the inside of the workboard is provided with a clamping head. The tension detection mechanism for grinding abrasive belt processing, when working, clamps the workpiece through the clamping head on the inner wall of the workboard, then the motor starts, the upper and lower workboards are separated from each other, and finally the tension detection of the workpiece is completed. In this process, the main release rod and the auxiliary release rod work, and when the workpiece breaks and flies, the main release rod and the auxiliary release rod are contacted first to release the force, so that the influence on the workers is avoided, and the safety is improved.

Description

Technical Field

[0001] This invention relates to the field of abrasive belt testing technology, specifically a tensile testing mechanism for abrasive belt processing. Background Technology

[0002] The function of abrasive belts is to grind, polish, or deburr the surface of a workpiece by using abrasive grains to cut it through high-speed rotation or reciprocating motion. It can remove oxide layers, rust, old coatings, and microscopic protrusions from material surfaces, correct workpiece dimensions and geometric accuracy, reduce surface roughness, and provide a qualified base surface for subsequent electroplating, spraying, and other processes. Simultaneously, the abrasive belt has cold-grinding properties, making it less likely to burn the workpiece. It is suitable for large-area or complex contour surface treatment of various materials such as metal, wood, and plastic. During the production of abrasive belts, tensile testing is required. A stable tensile force is applied to the abrasive belt to ensure its tensile strength meets standards and prevent breakage during use. For example, Chinese utility model patent application number 202322263814.1, filed on August 22, 2023, describes a tensile testing device for abrasive belts. In use, by setting up forward and reverse motors, when it is necessary to move the first movable block, the user only needs to control the forward and reverse motors via an external control switch, which drives the winding roller to rotate and simultaneously moves the wire rope, thus moving the connecting block. Simultaneously, it can move the sliding sleeve and the connecting rod, thus moving the first movable block and enabling tensile testing of the abrasive belt. This makes moving the first movable block faster. There is also a Chinese utility model patent application with application number 202322276591.2 and application date of 2023-08-23, which describes a tensile testing mechanism for abrasive belts. In use, it is equipped with a first motor, a first threaded rod, a second threaded rod, a threaded cap, and a first pressure sensor. When testing the tensile strength of the abrasive belt, the first motor is controlled by a switch, which in turn rotates the first and second threaded rods. With the cooperation of the movable groove, the threaded cap moves, and simultaneously the first pressure sensor moves, thus performing tensile testing on both ends of the abrasive belt. The combination of the first motor, the first threaded rod, the second threaded rod, the threaded cap, and the first pressure sensor makes it easier to perform tensile testing on both ends of the abrasive belt. However, during the testing process, the sanding belt will be stretched and eventually break. After the sanding belt breaks, it may fly out and accidentally injure the staff. If there is no protective structure to prevent the sanding belt from breaking, it will increase the risk in the testing process, increase the probability of staff injury, and thus affect subsequent work, causing unnecessary trouble for the sanding belt testing. Summary of the Invention

[0003] The purpose of this invention is to provide a tensile testing mechanism for abrasive belt processing, in order to solve the problem mentioned in the background art that the lack of a protective structure for belt breakage increases the risk during the testing process, raises the probability of worker injury, and affects subsequent work, causing unnecessary trouble for belt testing.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a tensile testing mechanism for abrasive belt processing, comprising a base, with working frames bolted to both sides of the upper surface of the base, a motor bolted to the upper surface of the left working frame, and a limit rod fixedly connected to the inner wall of the right working frame; a working plate, slidably disposed inside the working frame, and having a clamping head disposed inside the working plate; a main release rod, movably disposed on the surface of the working frame via a rotating assembly, and having a positioning rod fixedly connected to the surface of the working frame; a secondary release rod, slidably disposed on the upper surface of the working plate via a telescopic assembly, and having an auxiliary release rod fixedly connected to its end via a long rod; and a warning rod, movably disposed on the surface of the working plate via an extension and retraction assembly, and used to distinguish the working area when in operation.

[0005] Preferably, the output end of the motor is fixedly connected to a connecting shaft, and the connecting shaft is threadedly connected to the working plate. The working plates are symmetrically distributed on both sides of the work frame. In addition, the helical directions of the threads on the upper and lower sides of the connecting shaft are opposite.

[0006] Preferably, the rotating assembly includes a long pin fixedly connected to the surface of the work frame, and a torsion spring fixedly connected to the surface of the long pin. Meanwhile, a main release rod is sleeved and connected to the surface of the long pin, and the other side of the torsion spring is fixedly connected to the inner wall of the main release rod.

[0007] Preferably, a connecting rod is fixedly connected to the surface of the working plate, and the left side of the connecting rod is an inverted "L" structure. In addition, the surface of the connecting rod is initially in contact with the surface of the main release rod. Furthermore, the torsion spring is initially in a compressed and stored state. When the positioning rod is working, it is used to limit the rotation angle of the main release rod.

[0008] Preferably, the telescopic assembly includes a fixing block fixedly connected to the surface of the working plate, and the secondary release rod is slidably disposed inside the fixing block, and the end of the secondary release rod has an arc-shaped structure. In addition, a guide rod is rotatably disposed on the side of the secondary release rod.

[0009] Preferably, the telescopic assembly further includes an inner plate fixedly connected to the inner wall of the work frame, and the surface of the inner plate is provided with a guide groove, and the guide rod is located on the inner wall of the guide groove. At the same time, the front side of the guide groove is inclined and the rear side of the guide groove is vertical.

[0010] Preferably, the surface of the working plate is concave, and the clamping head is located in the concave position.

[0011] Preferably, the unfolding and retracting assembly includes a protective plate fixedly connected to the surface of the work frame, and toothed blocks are fixedly connected at equal intervals on the inner wall of the protective plate. The protective plate has a bent structure, and a docking plate is fixedly connected to the surface of the lower work plate. An external connecting rod is rotatably provided inside the docking plate.

[0012] Preferably, the warning rod is fixedly connected to the end of the external rod, and the front of the warning rod is inverted "U" shape, and a gear that meshes with the tooth block is fixedly connected to the surface of the external rod.

[0013] Preferably, a limiting block is fixedly connected to the surface of the external rod, and a first magnet is fixedly connected to the inner wall of the limiting block. A limiting groove corresponding to the limiting block is opened on the inner wall of the docking plate, and a second magnet is fixedly connected to the inner wall of the docking plate. Furthermore, the magnetic poles on the surface of the second magnet are opposite to the magnetic poles on the surface of the first magnet.

[0014] Compared with existing technologies, the advantages of this invention are: It employs a novel structural design. During operation, the workpiece is clamped by gripping heads on the inner wall of the work plate. Then, the motor starts, causing the upper and lower work plates to separate, ultimately completing the tensile force detection of the workpiece. During this process, the main release rod and auxiliary release rod activate. When the workpiece breaks off and flies away, it first contacts the main and auxiliary release rods, releasing the kinetic energy of the sanding belt without affecting the workers, thus improving safety. The specific details are as follows: This tensile testing mechanism for abrasive belt processing clamps the workpiece through a clamping head on the inner wall of the work plate during operation. Then, the motor starts and the connecting shaft rotates. The spirals on the upper and lower sides of the connecting shaft rotate in opposite directions. At this time, the work plate separates from each other under the action of the connecting shaft and the limiting rod, thereby stretching the workpiece and finally completing the tensile testing of the workpiece. The operation process is quick and convenient.

[0015] Furthermore, as the working plates move away from each other, the working plates will drive the connecting rod to move synchronously, causing the connecting rod to move away from the main release rod. At this time, the main release rod rotates around the long pin under the action of the torsion spring, and then moves towards the middle position of the working frame. Finally, the main release rod moves to the top of the concave position of the working plate, thus playing a role in initially blocking and releasing kinetic energy when the sand belt breaks.

[0016] This tensile testing mechanism for abrasive belt processing moves the fixed block and the secondary release rod synchronously as the working plates move away from each other. The secondary release rod then drives the guide rod to slide inside the guide groove. At this time, the guide rod, under the action of the guide groove, drives the secondary release rod to move towards the middle of the work frame. Finally, the secondary release rod also moves to the top of the recessed position of the working plate, which plays the role of blocking and releasing kinetic energy.

[0017] Furthermore, the surface of the secondary release rod is equipped with an auxiliary release rod, so that when the sanding belt breaks at any position, the main release rod, secondary release rod, and auxiliary release rod will all play a timely blocking role, preventing errors during operation, ensuring stability, and high safety.

[0018] This tensile testing mechanism for abrasive belt processing features a warning bar on the lower working plate surface that rotates open under the action of gears, tooth blocks, and external rods when the working plates move away from each other. The external rod and warning bar are then fixed in place by the first and second magnets. Thus, the warning bar serves to drive workers away from the base and work frame, and also provides an action prompt, ensuring a safe inspection distance and improving safety.

[0019] Furthermore, after the inspection, the particles that fly off the sand belt can still be handled by the staff using normal methods. A receiving cloth can be installed on the warning pole. When the warning pole is opened, the receiving cloth also opens. When the receiving cloth is working, it can collect the particles that fall by their own weight, thereby reducing the workload of the staff later. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the connection structure between the base and the work frame of the present invention; Figure 2 This is a schematic diagram of the connection structure between the work frame and the motor of the present invention; Figure 3 This is a schematic diagram of the connection structure between the motor and the connecting shaft of the present invention; Figure 4 This is a schematic diagram of the connection structure between the connecting shaft and the working plate of the present invention; Figure 5 This is a schematic diagram of the main release rod in a cross-sectional state according to the present invention; Figure 6 This is a schematic diagram of the main release lever in its working state according to the present invention; Figure 7 This is a schematic diagram of the connection structure between the working plate and the docking plate of the present invention; Figure 8 This is a schematic diagram of the guide groove setting state structure of the present invention; Figure 9 This is a schematic diagram of the working structure of the guide rod of the present invention; Figure 10This is a schematic diagram of the external rod and gear connection structure of the present invention; Figure 11 This is a schematic diagram of the connection structure between the warning rod and the external rod of the present invention; Figure 12 For the present invention Figure 11 Enlarged structural diagram at point A in the middle.

[0021] In the diagram: 1. Base; 2. Working frame; 3. Motor; 4. Connecting shaft; 5. Limiting rod; 6. Working plate; 7. Connecting rod; 8. Long pin; 9. Main release rod; 10. Positioning rod; 11. Torsion spring; 12. Fixing block; 13. Secondary release rod; 14. Inner plate; 15. Guide groove; 16. Guide rod; 17. Auxiliary release rod; 18. Connecting plate; 19. Warning rod; 20. Gear; 21. Protective plate; 22. Gear block; 23. Outer rod; 24. Limiting block; 25. Limiting groove; 26. First magnet; 27. Second magnet. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] The present invention provides the following technical solution: a tensile testing mechanism for abrasive belt processing.

[0024] Please see Figures 1-12 The system includes a base 1, with a work frame 2 bolted to both sides of the upper surface of the base 1, and a motor 3 bolted to the upper surface of the left work frame 2, and a limit rod 5 fixedly connected to the inner wall of the right work frame 2; a work plate 6, which is slidably disposed inside the work frame 2, and a clamping head is provided inside the work plate 6. The output end of the motor 3 is fixedly connected to the connecting shaft 4, and the connecting shaft 4 is threadedly connected to the working plate 6. The working plates 6 are symmetrically distributed on both sides of the working frame 2. In addition, the spiral directions of the threads on the upper and lower sides of the connecting shaft 4 are opposite.

[0025] Specifically, during operation, the workpiece is clamped by the clamping head on the inner wall of the work plate 6. Then, the motor 3 on the upper surface of the work frame 2 is started, and the connecting shaft 4 rotates. The spirals on the upper and lower sides of the connecting shaft 4 rotate in opposite directions. At this time, the work plate 6 separates from each other under the action of the connecting shaft 4 and the limiting rod 5, thereby stretching the workpiece and finally completing the tensile test of the workpiece. The operation process is quick and convenient.

[0026] The main release rod 9 is movably mounted on the surface of the work frame 2 via a rotating assembly, and a positioning rod 10 is fixedly connected to the surface of the work frame 2. The rotating assembly includes a long pin 8 fixedly connected to the surface of the work frame 2, and a torsion spring 11 is fixedly connected to the surface of the long pin 8. The main release rod 9 is sleeved and connected to the surface of the long pin 8, and the other side of the torsion spring 11 is fixedly connected to the inner wall of the main release rod 9. A connecting rod 7 is fixedly connected to the surface of the work plate 6, and the left side of the connecting rod 7 is an inverted "L" structure. In addition, the surface of the connecting rod 7 is initially in contact with the surface of the main release rod 9. Furthermore, the torsion spring 11 is initially in a compressed and stored state. When the positioning rod 10 is working, it is used to limit the rotation angle of the main release rod 9.

[0027] Specifically, as the working plates 6 move away from each other, the working plates 6 will drive the connecting rod 7 to move synchronously, causing the connecting rod 7 to move away from the main release rod 9. At this time, the main release rod 9 rotates around the long pin 8 under the action of the torsion spring 11, and then the main release rod 9 rotates towards the middle position of the working frame 2. Finally, the main release rod 9 moves to the upper end of the recessed position of the working plate 6 (at this time, the main release rod 9 is in contact with the surface of the positioning rod 10, and the positioning rod 10 plays the role of limiting the rotation angle, such as...). Figure 5 and Figure 6 As shown in the figure, when the sand belt breaks, the main release rod 9 plays a role in initially blocking and releasing kinetic energy.

[0028] The auxiliary release rod 13 is slidably mounted on the upper surface of the work plate 6 via a telescopic assembly, and the end of the auxiliary release rod 13 is fixedly connected to an auxiliary release rod 17 via a long rod. The telescopic assembly includes a fixing block 12 fixedly connected to the surface of the work plate 6, and the auxiliary release rod 13 is slidably mounted inside the fixing block 12. The end of the auxiliary release rod 13 has an arc-shaped structure. In addition, a guide rod 16 is rotatably mounted on the side of the auxiliary release rod 13. The telescopic assembly also includes an inner connecting plate 14 fixedly connected to the inner wall of the work frame 2. A guide groove 15 is opened on the surface of the inner connecting plate 14, and the guide rod 16 is located on the inner wall of the guide groove 15. The front side of the guide groove 15 is inclined, and the rear side of the guide groove 15 is vertical. The surface of the work plate 6 is concave, and the clamping head is located in the concave position.

[0029] Specifically, as the working plates 6 move away from each other, the fixed block 12 and the secondary release rod 13 move synchronously. The secondary release rod 13 then drives the guide rod 16 to slide inside the guide groove 15. The front side of the guide groove 15 is inclined, and the rear side is vertical. At this time, under the action of the guide groove 15, the guide rod 16 drives the secondary release rod 13 to move towards the middle position of the working frame 2. Finally, the secondary release rod 13 also moves to the top of the recessed position of the working plate 6, which plays the role of blocking and releasing kinetic energy. In addition, the surface of the secondary release rod 13 is provided with an auxiliary release rod 17. Therefore, when the sanding belt breaks at any position, the main release rod 9, the secondary release rod 13, and the auxiliary release rod 17 will all play a timely blocking role, preventing errors during operation, ensuring stability, and high safety.

[0030] Meanwhile, since the front side of the guide groove 15 is inclined and the rear side of the guide groove 15 is vertical, the secondary release rod 13 and the auxiliary release rod 17 will not continue to move when they reach their farthest distance, thus not affecting the rise and fall of the work plate 6. When the work plate 6 is reset, the secondary release rod 13 and the auxiliary release rod 17 move again under the action of the guide groove 15 and the guide rod 16. At this time, the secondary release rod 13 and the auxiliary release rod 17 are reset, and the whole process is completed automatically. At this time, the main release rod 9 also rotates and resets, making room for the staff to pick up the workpiece and install the workpiece for the next inspection.

[0031] Warning bar 19 is movably mounted on the surface of work plate 6 via extension and retraction assembly. When in operation, warning bar 19 is used to distinguish work areas. Extension and retraction assembly includes protective plate 21 fixedly connected to the surface of work frame 2. Tooth blocks 22 are fixedly connected at equal intervals on the inner wall of protective plate 21. Protective plate 21 has a bent structure. A docking plate 18 is fixedly connected to the surface of lower work plate 6. An external connecting rod 23 is rotatably mounted inside docking plate 18.

[0032] The end of the external rod 23 is fixedly connected to a warning rod 19, and the front of the warning rod 19 is inverted "U" shape. The surface of the external rod 23 is fixedly connected to a gear 20 that meshes with the toothed block 22. The surface of the external rod 23 is fixedly connected to a limit block 24, and a first magnet 26 is fixedly connected to the inner wall of the limit block 24. The inner wall of the docking plate 18 is provided with a limit groove 25 corresponding to the limit block 24, and a second magnet 27 is fixedly connected to the inner wall of the docking plate 18. Furthermore, the magnetic poles on the surface of the second magnet 27 are opposite to the magnetic poles on the surface of the first magnet 26.

[0033] Specifically, when the work plates 6 move away from each other, the warning bar 19, the docking plate 18, and the external rod 23 on the surface of the lower work plate 6 descend synchronously. At this time, the toothed block 22 on the inner wall of the protective plate 21 cooperates with the gear 20, causing the external rod 23 and the warning bar 19 to rotate and open. During this process, the limiting block 24 will slide on the inner wall of the limiting groove 25. Then, the external rod 23 and the warning bar 19 will be fixed by the action of the first magnet 26 and the second magnet 27. Thus, the warning bar 19 plays the role of driving the staff away from the base 1 and the work frame 2, and also has the function of action prompt, ensuring a safe inspection distance and improving safety. In addition, after the inspection, the particles that fly off the sand belt can be handled by the staff in accordance with normal methods. At the same time, a receiving cloth can be set on the warning bar 19. When the warning bar 19 is opened, the receiving cloth also opens. When the receiving cloth is working, it can collect the particles that fall by their own weight, thereby reducing the workload of the staff later. When the device needs to be repaired, normal maintenance can be carried out, such as maintenance of gear 20 and gear block 22.

[0034] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tensile testing mechanism for abrasive belt processing, comprising a base (1), wherein a work frame (2) is bolted to both sides of the upper surface of the base (1), and a motor (3) is bolted to the upper surface of the work frame (2) on the left side, and a limit rod (5) is fixedly connected to the inner wall of the work frame (2) on the right side. Its features are: The work plate (6) is slidably disposed inside the work frame (2), and a clamping head is provided inside the work plate (6); The main release rod (9) is movably mounted on the surface of the work frame (2) via a rotating assembly, and a positioning rod (10) is fixedly connected to the surface of the work frame (2). The secondary release rod (13) is slidably disposed on the upper surface of the working plate (6) via a telescopic assembly, and the end of the secondary release rod (13) is fixedly connected to an auxiliary release rod (17) via a long rod. Warning bar (19), which is movably mounted on the surface of the work plate (6) via an extension and retraction assembly, and is used to distinguish work areas when the warning bar (19) is in operation.

2. The tensile testing mechanism for abrasive belt processing according to claim 1, characterized in that: The output end of the motor (3) is fixedly connected to a connecting shaft (4), and the connecting shaft (4) is threadedly connected to the working plate (6). The working plate (6) is symmetrically distributed on both sides of the working frame (2). In addition, the spiral directions of the threads on the upper and lower sides of the connecting shaft (4) are opposite.

3. The tensile testing mechanism for abrasive belt processing according to claim 1, characterized in that: The rotating assembly includes a long pin (8) fixedly connected to the surface of the work frame (2), and a torsion spring (11) fixedly connected to the surface of the long pin (8). Meanwhile, a main release rod (9) is sleeved and connected to the surface of the long pin (8), and the other side of the torsion spring (11) is fixedly connected to the inner wall of the main release rod (9).

4. The tensile testing mechanism for abrasive belt processing according to claim 3, characterized in that: The working plate (6) is fixedly connected to a connecting rod (7), and the left side of the connecting rod (7) is an inverted "L" structure. In addition, the surface of the connecting rod (7) is initially in contact with the surface of the main release rod (9). Furthermore, the torsion spring (11) is initially in a compressed and stored state. When the positioning rod (10) is working, it is used to limit the rotation angle of the main release rod (9).

5. The tensile testing mechanism for abrasive belt processing according to claim 1, characterized in that: The telescopic assembly includes a fixed block (12) fixedly connected to the surface of the working plate (6), and the auxiliary release rod (13) is slidably arranged inside the fixed block (12), and the end of the auxiliary release rod (13) is an arc-shaped structure. In addition, a guide rod (16) is rotatably arranged on the side of the auxiliary release rod (13).

6. The tensile testing mechanism for abrasive belt processing according to claim 5, characterized in that: The telescopic assembly also includes an inner plate (14) fixedly connected to the inner wall of the work frame (2), and the surface of the inner plate (14) is provided with a guide groove (15), and the guide rod (16) is located on the inner wall of the guide groove (15). Meanwhile, the front side of the guide groove (15) is inclined and the rear side of the guide groove (15) is vertical.

7. The tensile testing mechanism for abrasive belt processing according to claim 1, characterized in that: The surface of the working plate (6) is concave, and the clamping head is located in the concave position.

8. The tensile testing mechanism for abrasive belt processing according to claim 1, characterized in that: The unfolding and retracting assembly includes a protective plate (21) fixedly connected to the surface of the work frame (2), and toothed blocks (22) are fixedly connected at equal intervals on the inner wall of the protective plate (21). The protective plate (21) is a bent structure, and a docking plate (18) is fixedly connected to the surface of the lower work plate (6), and an external connecting rod (23) is rotatably provided inside the docking plate (18).

9. The tensile testing mechanism for abrasive belt processing according to claim 8, characterized in that: The warning rod (19) is fixedly connected to the end of the external rod (23), and the front of the warning rod (19) is inverted "U" shape. A gear (20) that meshes with the toothed block (22) is fixedly connected to the surface of the external rod (23).

10. A tensile testing mechanism for abrasive belt processing according to claim 9, characterized in that: The surface of the external rod (23) is fixedly connected to a limiting block (24), and a first magnet (26) is fixedly connected to the inner wall of the limiting block (24). The inner wall of the docking plate (18) is provided with a limiting groove (25) corresponding to the limiting block (24), and a second magnet (27) is fixedly connected to the inner wall of the docking plate (18). Furthermore, the magnetic poles on the surface of the second magnet (27) are opposite to the magnetic poles on the surface of the first magnet (26).

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